10212211121977 has 2 divisors, whose sum is σ = 10212211121978. Its totient is φ = 10212211121976.

The previous prime is 10212211121953. The next prime is 10212211122023. The reversal of 10212211121977 is 77912111221201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9275460078096 + 936751043881 = 3045564^2 + 967859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212211121977 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212211121677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106105560988 + 5106105560989.

It is an arithmetic number, because the mean of its divisors is an integer number (5106105560989).

Almost surely, 2^{10212211121977} is an apocalyptic number.

It is an amenable number.

10212211121977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212211121977 is an equidigital number, since it uses as much as digits as its factorization.

10212211121977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 37.

The spelling of 10212211121977 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, nine hundred seventy-seven".